Home / 13,880.96-19,156.40-8,218.96

Finding the Fourth Proportional to 13,880.96, 19,156.40 and 8,218.96

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Solution

The fourth proportional to 13,880.96, 19,156.40 and 8,218.96 is: 11,342.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,880.96 : 19,156.40 = 8,218.96 : x
  2. Step 2: Convert to fraction form
    13,880.96/19,156.40 = 8,218.96/x
  3. Step 3: Cross multiply
    13,880.96x = 19,156.40 × 8,218.96
  4. Step 4: Simplify right side
    13,880.96x = 157,445,685.34
  5. Step 5: Solve for x
    x = 157,445,685.34/13,880.96
  6. Step 6: Final answer
    x = 11,342.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.